2014-02-10 02:10:30 +01:00
|
|
|
/*************************************************************************/
|
|
|
|
/* audio_stream_resampled.h */
|
|
|
|
/*************************************************************************/
|
|
|
|
/* This file is part of: */
|
|
|
|
/* GODOT ENGINE */
|
2017-08-27 14:11:45 +02:00
|
|
|
/* https://godotengine.org */
|
2014-02-10 02:10:30 +01:00
|
|
|
/*************************************************************************/
|
2017-01-01 22:01:57 +01:00
|
|
|
/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
|
2017-04-08 00:45:00 +02:00
|
|
|
/* Copyright (c) 2014-2017 Godot Engine contributors (cf. AUTHORS.md) */
|
2014-02-10 02:10:30 +01:00
|
|
|
/* */
|
|
|
|
/* Permission is hereby granted, free of charge, to any person obtaining */
|
|
|
|
/* a copy of this software and associated documentation files (the */
|
|
|
|
/* "Software"), to deal in the Software without restriction, including */
|
|
|
|
/* without limitation the rights to use, copy, modify, merge, publish, */
|
|
|
|
/* distribute, sublicense, and/or sell copies of the Software, and to */
|
|
|
|
/* permit persons to whom the Software is furnished to do so, subject to */
|
|
|
|
/* the following conditions: */
|
|
|
|
/* */
|
|
|
|
/* The above copyright notice and this permission notice shall be */
|
|
|
|
/* included in all copies or substantial portions of the Software. */
|
|
|
|
/* */
|
|
|
|
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
|
|
|
|
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
|
|
|
|
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
|
|
|
|
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
|
|
|
|
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
|
|
|
|
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
|
|
|
|
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
|
|
|
|
/*************************************************************************/
|
|
|
|
#ifndef AUDIO_STREAM_RESAMPLED_H
|
|
|
|
#define AUDIO_STREAM_RESAMPLED_H
|
|
|
|
|
|
|
|
#include "scene/resources/audio_stream.h"
|
|
|
|
|
2015-09-09 23:50:52 +02:00
|
|
|
#if 0
|
2014-02-10 02:10:30 +01:00
|
|
|
|
|
|
|
class AudioStreamResampled : public AudioStream {
|
|
|
|
OBJ_TYPE(AudioStreamResampled,AudioStream);
|
|
|
|
|
|
|
|
uint32_t rb_bits;
|
|
|
|
uint32_t rb_len;
|
|
|
|
uint32_t rb_mask;
|
|
|
|
uint32_t read_buff_len;
|
|
|
|
uint32_t channels;
|
|
|
|
uint32_t mix_rate;
|
|
|
|
|
|
|
|
volatile int rb_read_pos;
|
|
|
|
volatile int rb_write_pos;
|
|
|
|
|
|
|
|
int32_t offset; //contains the fractional remainder of the resampler
|
|
|
|
enum {
|
|
|
|
MIX_FRAC_BITS=13,
|
|
|
|
MIX_FRAC_LEN=(1<<MIX_FRAC_BITS),
|
|
|
|
MIX_FRAC_MASK=MIX_FRAC_LEN-1,
|
|
|
|
};
|
|
|
|
|
|
|
|
int16_t *read_buf;
|
|
|
|
int16_t *rb;
|
|
|
|
|
|
|
|
|
|
|
|
template<int C>
|
2014-12-15 19:42:58 +01:00
|
|
|
uint32_t _resample(int32_t *p_dest,int p_todo,int32_t p_increment);
|
2014-02-10 02:10:30 +01:00
|
|
|
|
|
|
|
|
|
|
|
protected:
|
|
|
|
|
|
|
|
_FORCE_INLINE_ int get_total() const {
|
|
|
|
|
|
|
|
return rb_len;
|
|
|
|
}
|
|
|
|
|
|
|
|
_FORCE_INLINE_ int get_todo() const { //return amount of frames to mix
|
|
|
|
|
|
|
|
int todo;
|
|
|
|
int read_pos_cache=rb_read_pos;
|
|
|
|
|
|
|
|
if (read_pos_cache==rb_write_pos) {
|
|
|
|
todo=rb_len-1;
|
|
|
|
} else if (read_pos_cache>rb_write_pos) {
|
|
|
|
|
|
|
|
todo=read_pos_cache-rb_write_pos-1;
|
|
|
|
} else {
|
|
|
|
|
|
|
|
todo=(rb_len-rb_write_pos)+read_pos_cache-1;
|
|
|
|
}
|
|
|
|
|
|
|
|
return todo;
|
|
|
|
}
|
|
|
|
|
|
|
|
//Stream virtual funcs
|
|
|
|
virtual int get_channel_count() const;
|
|
|
|
virtual bool mix(int32_t *p_dest, int p_frames);
|
|
|
|
|
|
|
|
_FORCE_INLINE_ void _flush() {
|
|
|
|
rb_read_pos=0;
|
|
|
|
rb_write_pos=0;
|
|
|
|
}
|
|
|
|
|
|
|
|
_FORCE_INLINE_ int16_t *get_write_buffer() { return read_buf; }
|
|
|
|
_FORCE_INLINE_ void write(uint32_t p_frames) {
|
|
|
|
|
2014-12-15 19:42:58 +01:00
|
|
|
ERR_FAIL_COND(p_frames >= rb_len);
|
2014-02-10 02:10:30 +01:00
|
|
|
|
|
|
|
switch(channels) {
|
|
|
|
case 1: {
|
|
|
|
|
|
|
|
for(uint32_t i=0;i<p_frames;i++) {
|
|
|
|
|
|
|
|
rb[ rb_write_pos ] = read_buf[i];
|
|
|
|
rb_write_pos=(rb_write_pos+1)&rb_mask;
|
|
|
|
}
|
|
|
|
} break;
|
|
|
|
case 2: {
|
|
|
|
|
|
|
|
for(uint32_t i=0;i<p_frames;i++) {
|
|
|
|
|
|
|
|
rb[ (rb_write_pos<<1)+0 ] = read_buf[(i<<1)+0];
|
|
|
|
rb[ (rb_write_pos<<1)+1 ] = read_buf[(i<<1)+1];
|
|
|
|
rb_write_pos=(rb_write_pos+1)&rb_mask;
|
|
|
|
}
|
|
|
|
} break;
|
|
|
|
case 4: {
|
|
|
|
|
|
|
|
for(uint32_t i=0;i<p_frames;i++) {
|
|
|
|
|
|
|
|
rb[ (rb_write_pos<<2)+0 ] = read_buf[(i<<2)+0];
|
|
|
|
rb[ (rb_write_pos<<2)+1 ] = read_buf[(i<<2)+1];
|
|
|
|
rb[ (rb_write_pos<<2)+2 ] = read_buf[(i<<2)+2];
|
|
|
|
rb[ (rb_write_pos<<2)+3 ] = read_buf[(i<<2)+3];
|
|
|
|
rb_write_pos=(rb_write_pos+1)&rb_mask;
|
|
|
|
}
|
|
|
|
} break;
|
|
|
|
case 6: {
|
|
|
|
|
|
|
|
for(uint32_t i=0;i<p_frames;i++) {
|
|
|
|
|
|
|
|
rb[ (rb_write_pos*6)+0 ] = read_buf[(i*6)+0];
|
|
|
|
rb[ (rb_write_pos*6)+1 ] = read_buf[(i*6)+1];
|
|
|
|
rb[ (rb_write_pos*6)+2 ] = read_buf[(i*6)+2];
|
|
|
|
rb[ (rb_write_pos*6)+3 ] = read_buf[(i*6)+3];
|
|
|
|
rb[ (rb_write_pos*6)+4 ] = read_buf[(i*6)+4];
|
|
|
|
rb[ (rb_write_pos*6)+5 ] = read_buf[(i*6)+5];
|
|
|
|
rb_write_pos=(rb_write_pos+1)&rb_mask;
|
|
|
|
}
|
|
|
|
} break;
|
|
|
|
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
virtual bool _can_mix() const =0;
|
|
|
|
|
|
|
|
_FORCE_INLINE_ bool _is_ready() const{
|
|
|
|
return rb!=NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
Error _setup(int p_channels,int p_mix_rate,int p_minbuff_needed=-1);
|
|
|
|
void _clear();
|
|
|
|
|
|
|
|
public:
|
|
|
|
AudioStreamResampled();
|
|
|
|
~AudioStreamResampled();
|
|
|
|
};
|
2015-09-09 23:50:52 +02:00
|
|
|
#endif
|
2014-02-10 02:10:30 +01:00
|
|
|
#endif // AUDIO_STREAM_RESAMPLED_H
|